Blenderblade assembly and shaft assembly thereof

Abstract

A shaft assembly ( 4 ) of a blender blade device ( 3 ) is provided. The blender blade device ( 3 ) is penetrated by the shaft assembly ( 4 ) and disposed in a blender container ( 1 ) and penetratingly disposed at the bottom of the blender container ( 1 ) to operably connect with a blender base ( 2 ). The shaft assembly ( 4 ) comprises a shaft body ( 41 ) and a wear-resistant sleeve ( 42 ). A stop ring ( 411 ) is disposed at the upper segment of the shaft body ( 41 ) and axially protrudes outward from the circumferential wall of the shaft body ( 41 ). The wear-resistant sleeve ( 42 ) axially fits around the outer wall of the shaft body ( 41 ) and has the top rim abutting against the bottom rim of the stop ring ( 411 ). The outer circumferential wall of the shaft body ( 41 ) is protected against direct contact and friction. With the wear-resistant sleeve ( 42 ) being wear-resistant and the shaft body ( 41 ) being immune to friction-induced damage, the shaft body ( 41 ) is unlikely to get spaced apart from watertight rings ( 44 ) even after long use, thereby waterproofing the shaft assembly ( 4 ).

What is claimed is: 
     
         1 . A shaft assembly ( 4 ) of a blender blade device ( 3 ), characterized in that: the shaft assembly ( 4 ) penetrates the blender blade device ( 3 ), and the blender blade device ( 3 ) is disposed in a blender container ( 1 ) and penetratingly disposed at a bottom of the blender container ( 1 ) to connect with a blender base ( 2 ), the shaft assembly ( 4 ) comprising:
 a shaft body ( 41 ), wherein a stop ring ( 411 ) is disposed at an upper segment of the shaft body ( 41 ) and axially protrudes outward from a circumferential wall of the shaft body ( 41 ); and   a wear-resistant sleeve ( 42 ), axially fitted around an outer wall of the shaft body ( 41 ) and having a top edge abutting against a bottom edge of the stop ring ( 411 ).   
     
     
         2 . The shaft assembly ( 4 ) of  claim 1 , characterized in that: a thickness of a sidewall of the wear-resistant sleeve ( 42 ) equals a distance by which the stop ring ( 411 ) protrudes from the circumferential wall of the shaft body ( 41 ). 
     
     
         3 . The shaft assembly ( 4 ) of  claim 1 , characterized in that: a top wall of the wear-resistant sleeve ( 42 ) not only faces the shaft body ( 41 ) but also inclines downward to slope from the outer sidewall to the inner sidewall, such that an annular space ( 43 ) is defined jointly by the bottom surface of the stop ring ( 411 ), the circumferential wall of the shaft body ( 41 ), and the inclined top wall of the wear-resistant sleeve ( 42 ), thereby allowing a watertight ring ( 44 ) to be disposed in the annular space ( 43 ).